Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Jan 2019
Changes in tissue oxygen tension, venous saturation, and Fick-based assessments of cardiac output during hyperoxia.
Hyperoxemia (arterial oxygen tension >100 mm Hg) may occur in critically ill patients and have effects on mixed venous saturation (SvO2 ) and on Fick-based estimates of cardiac output (CO). We investigated the effect of hyperoxemia on SvO2 and on assessments of CO using the Fick equation. ⋯ SvO2 acutely changes following changes in PaO2 even absent changes in measured DO2 . This may lead to errors in FickO2 estimates of CI. Further work is necessary to understand the impact of this phenomenon in disease states.
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Acta Anaesthesiol Scand · Jan 2019
Professional firefighter and trained volunteer first-responding units in emergency medical service.
Although widely dispatched to out-of-hospital cardiac arrests, the performance of prehospital first-responding units in other medical emergencies is unknown. ⋯ First-responding units provided initial treatment or assistance to ambulance personnel in approximately half of the missions. Implementation of professional- and layperson-staffed first-responding units in emergency medical service system seems to be feasible.